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Marquis data breach exposing 672,075 people's personal and financial information

Data Leak
First reported
Last updated
Happening score
H score 31
1 unique sources, 1 articles

Summary

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Marquis disclosed a data breach that exposed personal and financial records tied to 672,075 people, increasing the risk of identity theft and account fraud. The stolen information included names, dates of birth, addresses, phone numbers, Social Security numbers, Taxpayer Identification Numbers, and financial account information. The compromise originated in August 2025 and was reflected in breach notifications filed in early December.

Related Happenings

Vercel hit by network compromise

Incident
First: 19.04.2026 20:32 Last: 19.04.2026 20:32 Sources 1

About this happening: Vercel disclosed unauthorized access to certain internal systems and said a limited subset of customers was affected, while services remained operational during the investigation...

Latest development: 21.04.2026 00:01

Vercel disclosed that attackers used a compromised OAuth token tied to a Vercel employee's Google Workspace account and access to Context.ai to reach some Vercel environments and environment variables that were not marked as sensitive, and the company said a limited subset of customers had Vercel credentials compromised and were told to rotate them. Vercel said sensitive environment variables were not known to be accessed and that it was working with Mandiant, other security firms, Context.ai, and law enforcement while keeping services operational; Context separately said it had identified and stopped an AWS breach last month and later learned the actor likely also compromised OAuth tokens for some consumer users.

Open Happening

US District Court for the Eastern District of Texas complaint filed seeking damages against SonicWall on vendor-liability exposure over a cyber breach

Regulatory/Legal Action
First: 27.02.2026 00:02 Last: 27.02.2026 00:02 Sources 1

About this happening: Marquis filed a **federal complaint** in **US District Court for the Eastern District of Texas** against **SonicWall**, seeking **damages** over a **data breach** it says the vend...

Open Happening

Marquis Software Solutions lawsuit against SonicWall over cybersecurity failures

Regulatory/Legal Action
First: 25.02.2026 17:54 Last: 25.02.2026 17:54 Sources 1

About this happening: Marquis Software Solutions filed a lawsuit against **SonicWall**, alleging **gross negligence** and **misrepresentation** tied to a **ransomware attack** that disrupted operations...

Open Happening

Conduent hit by network compromise

Incident
First: 10.02.2026 19:04 Last: 10.02.2026 19:04 Sources 1

About this happening: **Conduent** disclosed a **security breach** affecting its **IT systems** between **October 21, 2024** and **January 13, 2025**. Threat actors stole **full names**, **Social Secur...

Open Happening

Marquis Software Solutions hit by ransomware attack

Incident
First: 29.01.2026 19:57 Last: 29.01.2026 19:57 Sources 1

How related: Marquis, a Texas-based financial services provider, revealed this week that a ransomware gang stole the data of over 670,000 individuals in an August 2025 cyberattack that also disrupted operations at 74 banks across the United States.

About this happening: **Marquis Software Solutions** disclosed that its **August 14, 2025** ransomware attack exposed personal data tied to **74 U.S. banks and credit unions** and affected **over 400,0...

Latest development: 18.03.2026 17:32

Marquis, a Texas-based financial services provider, disclosed that a ransomware gang stole personal and financial data from 672,075 people after an August 14, 2025 attack on a compromised SonicWall firewall, and the incident disrupted operations at 74 banks across the United States; breach notifications were filed in early December, and affected files were reviewed on December 10, 2025.

Open Happening

Timeline

  1. 18.03.2026 17:32 1 articles · 2mo ago

    Ransomware intrusion on Marquis systems

    Exploitation Observed

    A ransomware intrusion against Marquis on August 14, 2025 follows compromise of a SonicWall firewall and results in theft of personal and financial information from Marquis systems, while operations at 74 banks across the United States are disrupted.

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  2. 18.03.2026 17:32 2 articles · 2mo ago

    Marquis notifies affected people and describes breach fallout

    Victim Impact Update

    Marquis tells 672,075 affected people that ransomware actors took names, dates of birth, addresses, phone numbers, Social Security numbers, Taxpayer Identification Numbers, and financial account information, says the incident remained limited to Marquis systems, and notes that breach notifications were filed in early December 2025 and more than 36 consumer class action lawsuits followed.

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